CONDENSED CONSOLIDATED STATEMENT OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (UNAUDITED) - 6 months ended Jun. 30, 2015 - USD ($) $ in Thousands	Series A Convertible Preferred Stock	Series B Convertible Preferred Stock	Common Stock	Additional Paid-In Capital	Accumulated other comprehensive loss	Accumulated Deficit	Total
Beginning Balance, Shares at Dec. 31, 2014	1,000,000	1,000,000	122,494,000
Beginning Balance, Amount at Dec. 31, 2014	$ 178,218	$ 1	$ 123	$ 18,725	$ 236	$ (12,434)	$ 6,651
Exercise of common stock options, Shares			161
Exercise of common stock options, Amount				20			20
Conversion of Series A and Series B Convertible Preferred Stock	(1,000,000)	(1,000,000)	545,844,000
Conversion of Series A and Series B Convertible Preferred Stock, Amount	$ (178,218)	$ (1)	$ 546	177,673			178,218
Stock-based compensation				1,311			1,311
Sale of common shares, Shares			17,239,000
Sale of common shares, Amount			$ 17	15,845			15,862
Unrealized gain on marketable securities					$ (236)		(236)
Exercise of warrants, Shares			8,637,000
Exercise of warrants, Amount			$ 8	13,854			13,862
Net loss						(19,165)	(19,165)
Ending Balance, Shares at Jun. 30, 2015			694,375,000
Ending Balance, Amount at Jun. 30, 2015			$ 694	$ 227,428		$ (31,599)	$ 196,523